Zobrazeno 1 - 10
of 14
pro vyhledávání: '"S. B. Elegba"'
Publikováno v:
Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology. 31:2071-2078
Ash fouling during heat transfers in coal power‐plants has been known to be an engineering problem caused by high sodium levels of the feed‐coals. Instrumental Neutron Activation Analysis (INAA) was used in determining the concentration of some a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49c7e279941a2e67c449a7a086907e06
https://doi.org/10.1080/10934529609376475
https://doi.org/10.1080/10934529609376475
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Letters. 213:213-224
Rare Earth Elements (REE's) retain group coherence in their environment and are therefore useful geochemical markers. We report the pattern of ten REE's (La, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Yb, Lu) determined by Instrumental Neutron Activation Analysis (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2a301acbfad4f0f97f12c4156961c6b
https://doi.org/10.1007/bf02165693
https://doi.org/10.1007/bf02165693
Publikováno v:
Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology. 31:1089-1100
Instrumental Neutron Activation Analysis (INAA) was used for the determination of the concentration of thirty‐three trace elements in both feed‐coal and ash obtained from a coal‐fired power station in Nigeria. Ash Enrichment Factors (EFs) were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f80cd34081a607e627cf8824a0cf9c0
https://doi.org/10.1080/10934529609376409
https://doi.org/10.1080/10934529609376409
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Letters. 201:25-30
A 5 Ci Am−Be isotopic neutron source was used for the routine determination of manganase in ore samples. Concentration range was 0.1–35%, sample mass is about 17 g, irradiation time 6 h and cooling time 2 min. Counting was performed with a flat 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6681be4b166da38d8d8460605bb08a8e
https://doi.org/10.1007/bf02204768
https://doi.org/10.1007/bf02204768
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 181:343-350
The mean squared slowing-down distance, , and the age to themal capture (Migration Area),M2, are direct measures of the slowing-down, and the spreading out, processes of neutrons in a medium. They also enter directly into reactor calculations. These
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36631d97b022dd862e4d3d971646cf51
https://doi.org/10.1007/bf02037640
https://doi.org/10.1007/bf02037640
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 178:365-373
Prospecting for high grade uranium deposits in NE Nigeria has over the years among other reasons been handicapped by lack of adequate understanding of the elemental primary dispersion pattern associated with known occurrences in this region. Thirty s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94321513ee8be0527e5b4633959a9ebc
https://doi.org/10.1007/bf02039730
https://doi.org/10.1007/bf02039730
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 148:145-153
Twenty four elements: Fe, Al, Ca, Mg, K, Na, Sc, Sr, Co, Cr, Zn, V, Hf, Ir, W, REE (La, Ce, Nd, Sm, Eu, Tb, Yb, Lu) and Th were determined in limestone and associated calcite from Abakaliki, South-Eastern Nigeria, by instrumental neutron activation a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7243f93f809f6a16d04db62673883a9f
https://doi.org/10.1007/bf02060556
https://doi.org/10.1007/bf02060556
Publikováno v:
Applied Radiation and Isotopes. 49:41-42
A 5 Ci AmBe neutron source was used for the rapid routine determination of Al in bauxite ores from Nigeria. The source is thermalised with paraffin wax in a cylindrical shape with six irradiation positions. The evaluation is based on the 27 Al(n,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71b6a46da6955f58224a535eec50e922
https://doi.org/10.1016/s0969-8043(97)00220-0
https://doi.org/10.1016/s0969-8043(97)00220-0
Publikováno v:
Applied Radiation and Isotopes. 48:103-104
A rapid and precise method was used for the determination of tin in cassiterite ore and tailings from the tin province of Jos Plateau, Nigeria using 241Am isotopic X-ray source. The application of the method is very attractive when compared to soluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10e924a3cdde9e6ce0179ac4a224dfc1
https://doi.org/10.1016/s0969-8043(96)00034-6
https://doi.org/10.1016/s0969-8043(96)00034-6
Autor:
S B Elegba, A I Amali
Publikováno v:
Journal of Physics C: Solid State Physics. 19:L169-L172
The effect of exchange and correlation in the dielectric response of semiconductors is investigated in the nonlocal-density approximation. It is shown that within the framework of linearised Thomas-Fermi-Dirac theory the spatial dielectric function s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7456f35fe501dfbb83e27c8a0a15fb76
https://doi.org/10.1088/0022-3719/19/8/002
https://doi.org/10.1088/0022-3719/19/8/002